Semi sustainable ethanol power production

If you are willing to make a totally sustainable ethanol generator, you can use Arbor Trees which domesticated, require 4,5 cycles to grow and/or produce branches and require 10kg Dirt per cycle, 70kg Polluted Water (irrigation) per cycle, that means: 315kg of Polluted water and 45kg of dirt are required to either grow branches, or produce branches

When you have 5 branches, you can start making a lot of Lumber. Basic inputs every 4,5 cycles are:
 * 315kg of Polluted water
 * 45kg of Dirt

Outputs:
 * 1,5 Tons of Lumber

After this you would want to refine lumber onto Ethanol, and, every 1,5T of lumber on an Ethanol Distiller produces:
 * 750kg of Ethanol
 * 500kg of Polluted dirt, which then you can Compost to get dirt and use on your Arbor Trees
 * 250kg of Carbon Dioxide, which if you want, you can either scrub it or use an Oxyfern to produce oxygen

Now you can use the ethanol in a Petroleum Generator, with 750kg of ethanol it produces:
 * 750kW of power
 * 187,5kg of Carbon dioxide
 * 200Kg of Polluted water

Those 200kg of polluted water, you can use a sieve to make it 200kg of water, and use it on Lavatories to make 468kg of polluted water, and thus, making the cycle totally sustainable.

Alternatively you can search for cool slush geysers or polluted water vents that are warmer and have food poisoning germs, but that does not matter if you will use that polluted water on the arbor trees